Improvement in ore-separators



F. CAZIN. Improvement in Ore-separators. No. 128,536. Paxemedluly 2,1872.

FREDERK CAZIN, OF FRUMET, MISSOURI.

IMPROVEMENT IN ORE-SEPARATORS.

Spec'ication forming part of Letters Patent No. 128,536, dated July 2, 1872.

Specification describing a new and useful Improvement in Ore-Separators, invented by FREDERIK CAZIN, of Frumet, Jeiierson county, Missouri.

Figures l and 2 are vertical longitudinal sections of my improved ore-separator taken,

respectively, on the lines C C and K K, Fig. 3, which is a top view of the same; Fig. 4 being a partial transverse section.

Similar letters of reference indicate correspondjng parts.

This invention relates to improvements in the arrangement of the actuating plungersieve and operating mechanism of an apparatus for separating crushed and screened mineral rock, according to the specilic gravityfi. e., separating the several kinds of pure ore from the Waste rock.

The invention consists in a plunger arranged parallel to a row of sieves and pivoted at one end, so that the force or effect of its stroke upon the water shall be gradually increased thence to its free end. It also consists in the arrangement of a slotted arm with the wrist-pin of the driving-shaft and the rod that connects with the plunger, so that the down stroke of the plunger shall be quicker than its up stroke.

A in the drawing represents the trough or vessel on which the sieves B Bl B2, for eiecting the separation, are arranged. The vessel is of suitable length, preferably with nearly semi-cylindrical bottom, and is stationary, secured ona supporting-frame, C. At the ends the vessel is closed, except that the watersupply pipe a enters one end. An inwardlyf opening valve, b, shuts the end of the pipe a.

Theupper part of the trough A contains a longitudinal partition, d, which, however, does not reach down to the bottom, serving merely to separate the plungerl) on one side from the sieves on the other. The plunger is a at board or plate, pivoted at one end to the vessel, while its other end is, by a pitman, e, connected with a slotted lever, f, in the slot of which the wrist-pin of Va crank, g, on the operating-shatt E works. The plunger is thereby vibrated up and down. Whenever it moves up it sucks the water in through the pipe a and draws it down through the sieves. Whenever it is coming down it shuts the through the sieves.

valve b and forces the water in the trough up The latter motion should be quicker than the former, for which object the wrist-pin of thecrank gis nearer the pivot of the lever f when swinging the same down, and further away from the pivot when swinging it up. Transversely the trough has a partition, h, between every pair of sieves, and also at the end of the last sieve B2. These partitions absolutely subdivide the trough into separate chambers for the collection of the several kinds or grades of ore, each partition being only sufficiently recessed on top to permit the necessary vibrations of the plunger. The motion of the plunger being greatest near its connection with the shaft E a larger amount of water will be forced through the rst sieve than through the next, and so forth; but the plunger-space, corresponding to the very last sieve B2, is made so much longer than its predecessor that the last sieve will receive more water than the latter. The portion of the plunger working for all sieves but the last sieve, being of equal length with each sieve, causes the proportion of water supplied to be regulated by the several lengths of sieves as well as by the adequate lift of the plunger. y

By thus regulating, bythe lengths of sieves, the duration of the passage of the ore over them, and the amount of Water supplied to each, the apparatus is specially adapted to such ores containing several valuable in gredents, where the last sieve is to let through more matter of a less speciic gravity than the other sieves. v

The bridges i i between the sieves are V-v shaped-that is, sharp-ridged-to offer as little resistance as possible.

I wish to call special attention to the importance and advantage of the single plunger, i

the sieves all deposition of refuse material on the latter is prevented.

Having; thus described myinvention7 I claim and connected with the rod e of the plunger as new and desire to secure by Letters Patand crank g of the driving-shaft, as shown and entdescribed', whereby the down motion of said 1. The plungerv D, arranged parallel to a plunger is made quicker than its up stroke7 as roW of sieves, and pivoted at one end Within and for the purpose specied. the casel A, es shown and described, so that FREDERIK CAZIN. the force or effect of its stroke may be grad- Y nelly increased from one end to the other, as Witnesses: and for the purpose specied. PETER W. FREES,

2. The slotted lever f, pivoted et one end, RICHARD VINGEL. 

